DTSE at less than two complex samples per symbol

Details DTSE at less than two complex samples per symbol DTSE at less than two complex samples per symbol

2006-12-26

2006-12-26

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S355000

Reexamination Certificate

active

07154971

ABSTRACT:
A digitally implemented demodulator (FIG.1) produces initial detection estimates (180) and transition estimates (23) of symbols sampled in the range lying between 1 and 2 complex samples per symbols of the received carrier (14I), (14Q). In the case of detection estimate, the second-occurring of the two estimated values is selected as the correct value when there are two samples in the symbol interval. In the case the transition time estimate, the first-occurring of the two estimated values is selected as the correct timing estimate.

REFERENCES:
patent: 3621129 (1971-11-01), Fisher
patent: 3878323 (1975-04-01), Fisher
patent: 5052027 (1991-09-01), Poklemba et al.
patent: 5537435 (1996-07-01), Carney et al.
patent: WO 98/12849 (1998-03-01), None

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